General Description: In Project Navigator, when a CoreGEN core is generated, the associated xco file is added to the project. Double clicking on the xco will reload CoreGEN with the core information and allow the user to change any parameters and regenerate.
On Windows2000, double clicking on the xco causes a error.
Open CoreGEN and select File -> Execute Command File, select the xco file. This will load CoreGEN with the core information.